I like Jason Allen as long as he's cheap. He can be a decent #2 CB. He has balls skills and he sticks in coverage pretty well. He won't ever be a #1 CB, but he's not much worse in coverage than Dunta Robinson was. He's the kind of guy that makes Kareem Jackson a better player, because either KJ steps up to the competition, or he plays as the #3 CB, which he can handle just fine. Allen provides competition, depth, and quality play at a position that's pretty important these days.